So it seems that apart from Israel, no legal problems. Another good reason not to visit Israel!
(as for whether you like an Air 2 or not, that's opinion, sort or Protestant/Catholic thing, not expecting any consensus there!) For me, it does the business, one less hose and dangly thing, and can always be found easily, but then that's just my opinion, etc.
Actually, Israel/Red Sea is beautiful and a great place to just have fun in the sun. Prices are "hostels" to "luxury hotels". There are so many people, including "rusty" divers, that come to Eilat because it is the most Northern tropical dive spot. They fly in from Netherlands, Ireland, Germany, Great Britain, etc. The Israel Dive Authority set these laws to protect these rusty divers and newbie divers who have the latest equipment, but don't know how to use them. I do think it is a unique situation.
The question was about the illegality of AIR2(3, etc). I'm still wondering if there are other places.